Using Borrowed Chords to Create Emotion in Film Scoring

In film scoring, the ability to evoke precise emotional responses is paramount. Borrowed chords—also called mode mixture or modal interchange—are a cornerstone of this craft, enabling composers to color a scene with unexpected harmonic shades that resonate deeply with audiences. By temporarily importing chords from the parallel minor or major key, filmmakers and composers can amplify drama, underscore longing, or inject an unnerving tension that lingers long after the credits roll.

Overview

Borrowed chords are chords taken from the parallel key—the major or minor key with the same tonic. For example, in a piece in C major, a composer might borrow the iv chord (F minor) from C minor, or the ♭VI chord (A♭ major) from C minor. This practice enriches the harmonic palette without abandoning the tonal center, creating a sense of familiarity with a twist. In film music, these chords become storytelling devices, often signaling emotional shifts, character development, or narrative turning points.

How Borrowed Chords Work

The theoretical foundation lies in the concept of modal interchange, where chords from parallel modes (especially the natural minor, harmonic minor, and melodic minor) are imported into a major context, or vice versa. The most common borrowed chords include the minor iv, ♭VI, ♭III, and ♭II (Neapolitan) in major keys. In minor keys, composers often borrow the major IV or V from the parallel major to brighten a passage. The emotional effect stems from the alteration of expected pitch content: a single chromatic note can transform the affective quality of an entire phrase. For instance, in a major key, the iv chord (F–A♭–C) introduces the lowered sixth degree, A♭, which evokes a sense of melancholy or yearning—a staple in countless love themes and tragic scenes.

The Emotional Palette

Borrowed chords are not random; each carries a distinct expressive potential. The minor iv is often associated with poignancy, nostalgia, or gentle sorrow—think of the pre-chorus in many pop ballads or the climax of a romantic drama. The ♭VI chord (e.g., A♭ in C major) can create a feeling of awe, wonder, or sudden revelation, frequently used in epic or fantasy scores. The ♭III (E♭ in C major) introduces a heroic or pastoral quality, while the ♭II (D♭ in C major) injects chromatic tension, often heard in suspense or mystery sequences. In minor keys, borrowing the major IV (e.g., F in A minor) adds warmth and hope, while the major V (E major in A minor) intensifies drive and resolution, as heard in countless action cues. By sequencing these borrowed chords, composers craft a narrative arc of emotions, guiding the audience through joy, fear, love, and loss.

Historical Context

The use of borrowed chords dates back to the Renaissance, but it became a defining feature of Romantic-era harmony, particularly in the works of Franz Schubert, Johannes Brahms, and Richard Wagner. In the early 20th century, film composers inherited this vocabulary, adapting it to the needs of visual storytelling. The golden age of Hollywood scoring, led by composers like Max Steiner and Erich Wolfgang Korngold, employed borrowed chords to underline melodrama and adventure. The mid-20th century saw a refinement of these tools in the music of Bernard Herrmann, whose score for Vertigo (1958) uses mode mixture to evoke obsession and disorientation. As film music evolved, composers like John Williams, Hans Zimmer, and Thomas Newman have continued to use borrowed chords as a fundamental expressive device, bridging classical tradition with contemporary cinematic language.

Notable Film Composers

Several composers have become masters of the borrowed chord idiom. John Williams frequently employs ♭VI and ♭II chords to create otherworldly wonder in scores like E.T. the Extra-Terrestrial and Star Wars. Howard Shore uses modal interchange to craft the brooding landscapes of The Lord of the Rings, particularly with the minor iv in the Shire themes. Hans Zimmer’s minimalist approach often relies on borrowed chords to build tension, as in Inception or Interstellar, where a simple i–♭VI–♭III progression becomes a stirring mantra. Alexandre Desplat’s delicate palette in The Grand Budapest Hotel uses ♭VI to evoke elegance and whimsy. These composers demonstrate that a single chord change can redefine a scene’s emotional terrain.

Landmark Film Scores

Certain scores exemplify the power of borrowed chords. In Casablanca (1942), Max Steiner’s “As Time Goes By” uses a minor iv in the final scene to heighten bittersweet sacrifice. Bernard Herrmann’s Psycho (1960) employs dissonant mode mixture in the shower scene, shocking audiences with harmonic brutality. Jerry Goldsmith’s Chinatown (1974) uses trumpets and borrowed chords to create a haunting, fatalistic mood. More recently, Jonny Greenwood’s There Will Be Blood (2007) blends tonal and dissonant material, with the ♭II chord signaling malevolence. Each landmark score demonstrates how borrowed chords can become iconic, inseparable from the film’s emotional imprint.

Techniques and Examples

Composers employ several specific techniques to maximize emotional impact. The picardy third—borrowing the major tonic from the parallel major at the end of a minor piece—can transform despair into hope, as heard in many classical works and occasionally in film epilogues. The borrowed subdominant (iv in major) often precedes a cadence, delaying resolution and heightening anticipation. The Neapolitan chord (♭II) has a distinctive, intense color, used in tragic or climactic moments. For example, in John Williams’ score for Harry Potter and the Sorcerer’s Stone, the “Hedwig’s Theme” briefly uses a ♭VI chord to suggest the mysteriousness of the magical world. In a suspense cue, a composer might alternate between I and iv, creating an unsettled, pulsing effect—a technique common in thrillers.

Notation and Theory

In musical notation, borrowed chords are not specially marked; they appear as normal chord symbols or Roman numerals with accidentals. For example, in a lead sheet, a borrowed iv in C major would be written as Fm, while a ♭VI would be A♭. In theoretical analysis, they are often labeled with a caret or arrow to indicate the borrowed source key. The harmonic function is typically the same—a subdominant remains a subdominant—but the altered pitch content changes its color. Understanding these chords requires a firm grasp of scale degrees and key relationships. Film composers often work with chord charts or mock-ups, and the notation remains straightforward, though the emotional payoff is anything but ordinary.

Common Misconceptions

One common misconception is that borrowed chords are dissonant or atonal; in fact, they are fully tonal, simply using notes outside the original scale. Another is that they are rare or avant-garde; they appear in pop, rock, jazz, and film music as a staple. Some confuse borrowed chords with secondary dominants—the latter involve temporary tonicization, while borrowed chords do not. Additionally, listeners might mistake a borrowed chord for a modulation; however, borrowed chords do not establish a new key, they merely glimpse it. Understanding these distinctions clarifies how composers use them with intention.

Legacy and Influence

The legacy of borrowed chords in film scoring is vast, influencing not only cinematic music but also video game soundtracks, television scores, and even modern pop production. Their ability to convey emotion with economy and elegance ensures their continued use. As film scoring evolves, composers experiment with more exotic mode mixture (such as borrowing from the Lydian or Mixolydian modes) but the classic major/minor interchange remains the backbone of emotional storytelling. The technique endures because it taps into fundamental psychological responses to tension and release, making it an indispensable tool for composers across all media.

In conclusion, borrowed chords are not merely a theoretical curiosity but a living language of emotion in film music. By understanding their mechanics, historical roots, and expressive potential, composers and audiences alike can appreciate the subtle craft that makes a score unforgettable. Whether whispering nostalgia or shouting despair, these chords shape the emotional architecture of cinema—one resonant harmony at a time.